package com.itheima.utils;


import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.itheima.properties.AliyunOSSProperties;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.multipart.MultipartFile;

import java.io.*;
import java.util.UUID;

/**
 * 阿里云 OSS 工具类
 */
//这里很重要
@Component
public class AliyunOSSUtils {

    /*
    private String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
    private String accessKeyId = "LTAI5tKhFmAkggRvwK4jmRMv";
    private String accessKeySecret = "Yv0OKIbRqJt1XwLtoxc7DmEEbOt07b";
    private String bucketName = "tlias-web169";
    */

    /*@Value("${aliyun.oss.endpoint}") //@Value注解：根据key读取application.propeeties文件中的值
   private String endpoint;
   @Value("${aliyun.oss.accessKeyId}")
   private String accessKeyId;
   @Value("${aliyun.oss.accessKeySecret}")
   private String accessKeySecret;
   @Value("${aliyun.oss.bucketName}")
   private String bucketName;*/


    //注入配置参数实体类对象
    @Autowired
    AliyunOSSProperties aliyunOSSProperties;



    /**
     * 实现上传图片到OSS
     */
    public String upload(MultipartFile file) throws IOException {

        /*以下4个参数没有指定值（默认值：null）*/
        String endpoint = aliyunOSSProperties.getEndpoint();
        String accessKeyId = aliyunOSSProperties.getAccessKeyId();
        String accessKeySecret = aliyunOSSProperties.getAccessKeySecret();
        String bucketName = aliyunOSSProperties.getBucketName();

        // 获取上传的文件的输入流
        InputStream inputStream = file.getInputStream();

        // 避免文件覆盖
        String originalFilename = file.getOriginalFilename();
        String fileName = UUID.randomUUID().toString() + originalFilename.substring(originalFilename.lastIndexOf("."));

        //上传文件到 OSS
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
        ossClient.putObject(bucketName, fileName, inputStream);

        //文件访问路径
        String url = endpoint.split("//")[0] + "//" + bucketName + "." + endpoint.split("//")[1] + "/" + fileName;
        // 关闭ossClient
        ossClient.shutdown();
        return url;// 把上传到oss的路径返回
    }

}
